CVE-2017-7758: Mozilla: Out-of-bounds read in Opus encoder (MFSA 2017-16)

Severity: Critical

CVSS Score: 9.1

An out-of-bounds read vulnerability with the Opus encoder when the number of channels in an audio stream changes while the encoder is in use. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.